Multifunction Bow Divider Drafting Compass w/Lock Math Compass Drawing Metal Geometry Compass Engineering Compasses Drawing Tool _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ Multifunctional Compasses Drawing Tools Spring Chart Planning Line Caliper Spacer Accurate Gauge Leather Tool _x000D_ Feature: _x000D_ 1. Precision mathematical compass - for mathematical geometry and artistic drawing. _x000D_ 2. Unique design prevents skidding while drawing. _x000D_ 3. Precise adjustment - adjusting knobs enables students to produce accurate geometry. _x000D_ 4. You can lock the compass in place and actually hold it as you write. _x000D_ 5. All metal material - made of high quality parts and strong construction, durable enough to last for a long time. _x000D_ 6. Three additional wires can be easily replaced when required. _x000D_ 7. Stability: compass with spring bow and thumb wheel can prevent accidental sliding. _x000D_ 8. Strong metal structure, compact size, light weight, very suitable for senior students and apprentices. _x000D_ 9. Suitable for drawing circle or arc, suitable for mathematics and painting teaching, and also an excellent tool for carpenters. _x000D_ _x000D_ Specification: _x000D_ Material: Metal _x000D_ Dimensions: 10.6 x 2.9 x 0.8 cm / 4.2 x 1.1 x 0.3'' _x000D_ Maximum circle radius: 4.6cm/1.8'' _x000D_ Color: Silver _x000D_ _x000D_ Note: _x000D_ 1. Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! _x000D_ 2. Please allow 1-2cm measuring deviation due to manual measurement. _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ 1 X Compasses _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_